A Detection Method for Small Kuiper Belt Objects: The Search for
... at ² = 4σ , where σ is the rms signal fluctuations (i.e., the photometric precision limit of the instrument), with 8? typically about 0.01 to 1 mas. However, as we shall see in subsequent sections, these formulas are quite approximate and only valid for a large stellar radius (>0.1 mas) because diff ...
... at ² = 4σ , where σ is the rms signal fluctuations (i.e., the photometric precision limit of the instrument), with 8? typically about 0.01 to 1 mas. However, as we shall see in subsequent sections, these formulas are quite approximate and only valid for a large stellar radius (>0.1 mas) because diff ...
The colour–magnitude relation of globular clusters in Centaurus and
... the range of observed relations in other environments. We find that the GC mass-metallicity relation already sets in at present-day masses of a few 105 M and is well established in the luminosity range of massive MW clusters like ω Centauri. The inclusion of a primordial mass-radius scaling of star ...
... the range of observed relations in other environments. We find that the GC mass-metallicity relation already sets in at present-day masses of a few 105 M and is well established in the luminosity range of massive MW clusters like ω Centauri. The inclusion of a primordial mass-radius scaling of star ...
as a PDF - Research Database
... oxygen-rich AGB stars and red supergiants in the LMC, which undergo strong regular pulsations (Whitelock et al. 2003) and are enshrouded in dusty envelopes. This is the first empirical relationship of its kind, that can be readily applied in models for stellar and galactic evolution. Although much w ...
... oxygen-rich AGB stars and red supergiants in the LMC, which undergo strong regular pulsations (Whitelock et al. 2003) and are enshrouded in dusty envelopes. This is the first empirical relationship of its kind, that can be readily applied in models for stellar and galactic evolution. Although much w ...
The interstellar medium and star formation on kpc size scales
... according to the Schmidt–Kennicutt relation (Schmidt 1959; Kennicutt 1989), but at values that are much too high. However, in neither case do either the original global calculations, or resimulations include stellar feedback, and in the case of Bonnell et al. (2013), the original global simulations ...
... according to the Schmidt–Kennicutt relation (Schmidt 1959; Kennicutt 1989), but at values that are much too high. However, in neither case do either the original global calculations, or resimulations include stellar feedback, and in the case of Bonnell et al. (2013), the original global simulations ...
on the evolution of anomalous x-ray pulsars and soft gamma
... We show that the period clustering of anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), their X-ray luminosities, ages, and statistics can be explained with fall back disks with large initial specific angular momentum. The disk evolution models are developed by comparison to self-s ...
... We show that the period clustering of anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), their X-ray luminosities, ages, and statistics can be explained with fall back disks with large initial specific angular momentum. The disk evolution models are developed by comparison to self-s ...
Counting Sunspots - Lunar and Planetary Institute
... were present on the Sun. Also during that period, the Earth was much cooler than it http://www.makeitsolar.com/puzzle/word-search-puzzle/04-word-search-Sun.htm was before or is now. http://www.enchantedlearning.com/subjects/astronomy/activities/maze/Sunmaze. Our Sun isn't the only star with spots. J ...
... were present on the Sun. Also during that period, the Earth was much cooler than it http://www.makeitsolar.com/puzzle/word-search-puzzle/04-word-search-Sun.htm was before or is now. http://www.enchantedlearning.com/subjects/astronomy/activities/maze/Sunmaze. Our Sun isn't the only star with spots. J ...
The effect of the environment on the HI scaling relations
... already known, but a detailed quantification of their properties, crucial for a comparison with models, was still missing. Luckily, the situation is rapidly changing for 21 cm studies. The advent of large Hi surveys, such as the Arecibo Legacy Fast ALFA Survey (Giovanelli et al. 2005), which eventua ...
... already known, but a detailed quantification of their properties, crucial for a comparison with models, was still missing. Luckily, the situation is rapidly changing for 21 cm studies. The advent of large Hi surveys, such as the Arecibo Legacy Fast ALFA Survey (Giovanelli et al. 2005), which eventua ...
the redshift evolution of the mean temperature
... scheme which achieves fine sampling while also maintaining suitable signal-to-noise per annulus. The bin edges are tabulated in the Appendix (see Table A1). This two-part binning scheme yields roughly equal signal-to-noise in all bins, without requiring overly narrow/wide bins at any radius. The tot ...
... scheme which achieves fine sampling while also maintaining suitable signal-to-noise per annulus. The bin edges are tabulated in the Appendix (see Table A1). This two-part binning scheme yields roughly equal signal-to-noise in all bins, without requiring overly narrow/wide bins at any radius. The tot ...
Stellar coronal response to differential rotation and flux emergence
... In addition to surface flows, the coronal field is also altered through the addition of new magnetic flux, which emerges through the photosphere from the solar interior. Flux emergence is thought to be due to magnetically buoyant flux tubes rising up through the convective zone (e.g. Fan 2001), and ...
... In addition to surface flows, the coronal field is also altered through the addition of new magnetic flux, which emerges through the photosphere from the solar interior. Flux emergence is thought to be due to magnetically buoyant flux tubes rising up through the convective zone (e.g. Fan 2001), and ...
Chemical Composition of Selected Metal Poor Stars
... by GalaCtic chemical evolution (chemical enrichment history of our galaxy). Theories of Big Bang nucleosynthesis suggest that, it was mainly hydrogen, helium and little amount of elements upto boron which were synthesized primordially. Other metals (elements heavier than lithium) were formed from th ...
... by GalaCtic chemical evolution (chemical enrichment history of our galaxy). Theories of Big Bang nucleosynthesis suggest that, it was mainly hydrogen, helium and little amount of elements upto boron which were synthesized primordially. Other metals (elements heavier than lithium) were formed from th ...
Herschel far-infrared observations of the Carina Nebula complex⋆
... Methods. We study the properties of the 642 objects that are independently detected as point-like sources in at least two of the five Herschel bands. For those objects that can be identified with apparently single Spitzer counterparts, we use radiative transfer models to derive information about the ...
... Methods. We study the properties of the 642 objects that are independently detected as point-like sources in at least two of the five Herschel bands. For those objects that can be identified with apparently single Spitzer counterparts, we use radiative transfer models to derive information about the ...
Edmund C. Stoner and the discovery of the maximum mass of white
... pressure of the electrons caused by the exclusion principle. Fowler, however, did not attempt to determine the equilibrium properties of such a star which he regarded as “strictly analogous to one giant molecule in the ground state''. Apparently he was unaware that at the time, Llewellyn H. Thomas h ...
... pressure of the electrons caused by the exclusion principle. Fowler, however, did not attempt to determine the equilibrium properties of such a star which he regarded as “strictly analogous to one giant molecule in the ground state''. Apparently he was unaware that at the time, Llewellyn H. Thomas h ...
400 YEARS OF STELLAR ROTATION - DFTE
... faculae and sunspots, Galileo sketches the idea of stellar accretion due to in-falling matter. The “Historia e dimostrazioni...” is based on three letters written by Galileo to the German banker Marcus Welser who had asked his opinion on a opusculum published in Augsburg by the Jesuit Chistopher Sch ...
... faculae and sunspots, Galileo sketches the idea of stellar accretion due to in-falling matter. The “Historia e dimostrazioni...” is based on three letters written by Galileo to the German banker Marcus Welser who had asked his opinion on a opusculum published in Augsburg by the Jesuit Chistopher Sch ...
Planet Formation and Evolution: The Solar System and Extrasolar
... Atmospheric biomarker and spectral responses to biogenic variations on earth-like planets Structure and Dynamics of Circumstellar Matter in the Neighbourhood of UX Ori Stars Experiments on Fragmentation and Charge Separation in Pre-Planetary Dust Collisions The Tautenburg survey for extrasolar plane ...
... Atmospheric biomarker and spectral responses to biogenic variations on earth-like planets Structure and Dynamics of Circumstellar Matter in the Neighbourhood of UX Ori Stars Experiments on Fragmentation and Charge Separation in Pre-Planetary Dust Collisions The Tautenburg survey for extrasolar plane ...
AN INITIAL MASS FUNCTION STUDY OF THE DWARF Please share
... have determined ages and masses of some of the clusters in NGC 4214 were conducted and found to be comparable. For example, the young massive cluster located at the center of NGC 4214 (R.A. = 12h 15m 39.s 44, decl. = 36◦ 19 34. 94), noted here as Cluster 1, has age and mass estimates of 4–5 Myr a ...
... have determined ages and masses of some of the clusters in NGC 4214 were conducted and found to be comparable. For example, the young massive cluster located at the center of NGC 4214 (R.A. = 12h 15m 39.s 44, decl. = 36◦ 19 34. 94), noted here as Cluster 1, has age and mass estimates of 4–5 Myr a ...
Fundamental properties of core-collapse Supernova and GRB
... RSG phase. The models predict that core-collapse SN occur after the WR phase, and are of the type Ibc (Georgy et al. 2012, 2009). However, this scenario has yet to be observationally confirmed, specially because WR stars have not been directly detected as SN Ibc progenitors yet (Smartt 2009; Eldridg ...
... RSG phase. The models predict that core-collapse SN occur after the WR phase, and are of the type Ibc (Georgy et al. 2012, 2009). However, this scenario has yet to be observationally confirmed, specially because WR stars have not been directly detected as SN Ibc progenitors yet (Smartt 2009; Eldridg ...
